Take-up-arresting mechanism for looms.



No. 729,644. I PATENTED JUNE2, 190s.

' J.NORTHRQP.

TAKE-UP ARRESTING MECHANISM FOR LOOMS. L

APPLICATION FILED DEG. 1.7.1902.

N0 MODEL.

UNITED STATES Patented June 2, 1903.

PATENT OFFICE.

J ONASNORTHROP, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

TAKE-UP-ARRESTING MECHANISM FOR LOOMS.

SPECIFICATION forming part of1 Letters Patent No. 729,644, dated June 2, 1903. Applicatioufiled December 1'7, 1902- Serial No. 135,580. (No model.)

To aZl whom it may concern:

Be it known that I, JONAS NORTHROP, a subject of the King of Great Britain, and a resident of IIopedale, county of Worcester, State 5 of Massachusetts, have invented an Improvement in Take-Up-Arresting Mechanism for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to looms; and it has for its object the production of novel means for arresting the operation of the take-up mechanism upon a change in the normal running condition of the loom.

In accordance with my invention I have made provision for arresting take-up upon filling failure or upon filling replenishment in an automatic 100111 and upon the occurrence of a warp fault, the arrest of take-up being accompanied by let-back when filling replenishment is effected.

The various novel features of my invention will be described hereinafter and particularly pointed out in the following claims.

Figure 1 is a left-hand side elevation of a portion of a loom, showing the take-up mechanism and one embodiment of my invention applied thereto. Fig. 2 is an enlarged detail,

in side elevation, of the take-up-actuating pawl and a portion of the pawl-carrier. Fig.

3 is a transverse section thereof on the line 3, Fig. 2, looking toward the left; and Fig.

4 is a detail, centrally broken out, of one form of warp-stop-motion mechanism, which acts to arrest take-up upon the occurrence of warp fault.

Referring to Fig. 1, the lay-sword A having a bracket a, to which the pawl-carrier a 0 is attached, the ratchet (1 the train of gearing between its shaft and the take-up roll T, and

the controlling rock-shaft (Z having an arm d to engage a lug (0 on the pawl-carrier to eifeet disengagement of the pawl and ratchet 5 when said shaft is rocked to effect filling replenishment in an automatic loom, may be and are all substantially as in United States Patent No. 610,636, dated September 13, 1898,

said rock-shaft forming a part of the mech- 5o anism for eifecting the operation of fillingreplenishing mechanism if the loom be provided therewith or operating stopping means sustain the pawl.

Referring to Figs. 2 and 3, the pawl-carrier has a laterally-extended lug a provided with a down turned end a to receive a pin a the latter extending from the depending end a to the main part of the pawl-carrier. The pawl a has a hub a through which the pin passes, so that the pawl is pivotally mounted on the pawl-carrier and normally it depends above and in position to engage the teeth of the ratchet a, as in Fig. 1 and full lines, Fig. 2. A rearwardly-extended arm a on the pawl-hub is pivotally connected with a link a the lower end of the latter being slotted at 22 to receive a pin on an arm g of a rock-shaft 9 mounted on the lower part of the loom-frame. The said rock-shaft has a depending arm 9 and an'upturned arm g, bent over at its upper end and provided with an inclined cam-slot g, through which extends the end of the shipper S below its fulcrum 5*, the normal position "of the parts being shown in Fig. 1 with the shipper in running position. The rock-shaft 9 and its attached arms are controlled as to their movement by suitable warp-stop-motion mechanism, a link 9 forming a part thereof serving to attimes turn the rock-shaft 9 The warp-stop-motion mechanism may be such, for instance, as shown and described in United States Patent No. (573,825, dated May 7, 1901, the link g herein corresponding to the link M of said patent. In Fig. l I have shown the stopmotion-controlling detectors d, the cooperatin g feelers f, as in said patent, the usual camshaft O and the connections intermediate the feelers and the link, arrest of a feeler by a released detector operating through such connections to move the link g longitudinally toward the back of the loom, all substantially as described in said patent. Should a warpthread break or run out or become unduly slack, the stop-motion mechanism will operate to swing the upper end of arm g in the direction of arrow 100, Fig; 1, and the inclined edge of the slot will act on the shipper below its fulcrum to move its upper end out of the holding-notch in the plate N to stop the loom. Such movement of the arm 9 is accompanied by an upward swing of the arm 9 moving the link a in the direction of arrow 20, Fig. 1, to turn the pawl from fullline operative position, Fig. 2, into dottedline position out of engagement with the ratchet a and manifestly take-up is thereby arrested simultaneously with release of the shipper. WVhen the latter is released, the loom may be turned over by its momentum or by the attend ant after the loom has stopped without effecting any movement of the takeup mechanism.

I have shownin Fig. 1 a detent-pawl a for the ratchet o and a let-back pawl (L32, both of well-known construction, the former having a lateral pin (L31 extended above the pawlcarrier. Vhen the pawl-carrier is lifted by the rotation of the rock-shaft (7. as upon filling replenishment or detection of filling failure to disengage the take-up pawl and ratchet and arrest takeup, the pawl-carrier acts upon the pin a to lift the detent-pawl a from the ratchet. This permits the pawl a to operate and permits let-back of the takeup; but when take-up is arrested by or through the occurrence of a warp fault the pawl a is merely disengaged from the ratchet and the let-back means does not operate, the pawl-carrier remaining quiescent. \Vhen the shipper is released, the take-up is arrested upon the occurrence of'a warp fault, but without let-back, and upon filling replenishment there is arrest of take-up and also letback.

The slot and pin connection 22 40 between the link a and the arm a permits the operation of the pawl-carrier a by or through the lay-sword Without causing any movement of the pawl a relatively to the pawl-carrier.

In Fig. 1 the feeder F of filling-replenishing mechanism and the transferrer f may be of well-known construction, such, for instance, as shown in United States Patent No. 529, 940. The usual filling-forkf and its slide f are indicated in Fig. 1, outward movement of the slide upon detection of filling failure acting through the arm (Z to rock the shaft d in well-known manner.

My invention is not restricted to the precise construction and arrangement herein shown and described, as the same may be modified or varied in different particulars by those skilled in the art without departing from the spirit and scope of my invention.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a loom, take-up mechanism, including a pawl-carrier, and a pawl movably mounted thereon, means actuated by or through a change in the condition of the filling to move the pawl-carrier into inoperative position, and separate means operated by or through warp failure to move the pawl relatively to the pawl-carrier, to render the pawl inoperative.

2. In a loom, take-up mechanism, let-back means, means to arrest take-up and permit operation of the let-back means by or through a change in the condition of the filling, and separate means to arrest take-up by or through warp failure.

3. I11 a loom, take-up mechanism, let-back means, a shipper, means to release the ship per and arrest take-up simultaneously, and means operative by or through a change in the condition of the filling to arrest take-up and effect the operation of the let-back means.

4:. In a filling-replenishing loom, take-up mechanism, let-back means therefor, means to arrest take-up and permit operation of the let-back means upon filling replenishing, and

separate me ans to arrest take-up by or through warp failure, the let-back means remaining inoperative.

5. In aloom provided with filling-replenish= ing mechanism, take-up mechanism, let-back means therefor, a shipper, means to release the shipper and arrest take-up simultaneously, and means to arrest the take-up and effect the operation of the let-back means upon filling replenishment.

6. In a loom, take-up mechanism, including a pawl-carrier, an actuating-pawl pivotally mounted thereon, and detent and let-back pawls, means operated by or through a change in the condition of the filling to move the pawlcarrier to disengage the actuating and detent pawls from the ratchet and permit let-back thereof, and separate means operated by or through the occurrence of a warp fault to move the pawl relatively to the pawl-carrier and disengage it from the ratchet, the detentpawl remaining in cooperative engagement therewith.

7. In a loom, a shipper, take-up mechanism, including a pawl-carrier, and a pawl movably mounted thereon, means actuated by or through a change in the condition of the filling to move the pawl-carrier into inoperative position, and means operating simultaneously with the release of the shipper to move the pawl relatively to the pawl-carrier and thereby arrest take-up.

8. In a loom, a ship'per,take-up mechanism, including a pawl-carrier, and a take-up-actw ating pawl movably mounted thereon, means actuated by or through a change in the condition of the filling to move the pawl-carrier and thereby render said pawl inoperative, name to this specification in the presence of and means to move the pawl relatively to the two subscribing Witnesses. pawl-carrier upon release of the shipper and to return the pawl t0 operative position by or 5 through return of the shipper to running po- Witnesses:

sition. GEORGE OTIs DRAPER,

In testimony whereof I have signed my 1 ERNEST W. WOOD.

JONAS NORTHROPi 

